High-resolution long path Differential Optical Absorption Spectrometer (DOAS) for tropospheric OH and NO2 measurements is under development at the University of L’Aquila. The instrument uses a yag laser that emits at 532nm for NO2 measurements and a ti:sapphire laser, pumped by the yag-laser, that emits at 308nm for OH measurements. The atmospheric absorption light path is of 5km of total length using a retroreflector array 2.5 km from the laboratory. The spectrometer is an 2m focal length Echelle grating with CCD as detector and a linear dispersion of 0.3pm/pixel at 308nm and 0.57pm/pixel at 532nm. First laboratory tests of OH and NO2 will be shown.
Long Path DOAS system for tropospheric radicals measurements
DI CARLO, PIERO;
2005-01-01
Abstract
High-resolution long path Differential Optical Absorption Spectrometer (DOAS) for tropospheric OH and NO2 measurements is under development at the University of L’Aquila. The instrument uses a yag laser that emits at 532nm for NO2 measurements and a ti:sapphire laser, pumped by the yag-laser, that emits at 308nm for OH measurements. The atmospheric absorption light path is of 5km of total length using a retroreflector array 2.5 km from the laboratory. The spectrometer is an 2m focal length Echelle grating with CCD as detector and a linear dispersion of 0.3pm/pixel at 308nm and 0.57pm/pixel at 532nm. First laboratory tests of OH and NO2 will be shown.Pubblicazioni consigliate
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